shannon



(No Model.) 2 Sheets-Sheet 1.

E." W. SHANNON;

DIE FOR SWAGING SPOON AND PORK BLANKS. No. 349,609. Patented Sept. 21,, 1886.

(NoModeL) 2 Sheets-Sheet 2.

E. W. SHANNON.

DIE FOR SWAGING SPOON AND FORK BLANKS. No. 349,609. Patented Sept 21, 1886.

.5: 2/2 211750 M Ma m UNITED STATES PATENT OFFICE,

EDWARD \V. SHANNON, OF \VATERBURY, CONNECTICUT, ASSIG-NOR TO THE ROGERS & HAMILTON COMPANY, OF SAME PLACE.

DIE FOR SWAGING SPOON ANDFORK BLANKS.

SPECIFICATION forming part of Letters Patent No. 349,609, dated September 21, 1886.

Application filed July 3, 1886. Serial No. 207,078. (No model.)

To aZZ- whom it may concern:

Be it known that I, EDWARD W. SHANNON, a citizen of theUnited States, residing at \Vater-bury, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Dies for Swaging Spoon and Fork Blanks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to certain new and useful improvements in dies, such as are used for swaging up fork and spoon blanks, but is more especially intended as an improvement upon Letters Patent of the United States No. 232, 320, granted to Villiam \V. Vhite the 14th day of September, 1880. v

The object of the invention is to provide dies whose operating-su iaces are so conformed as to apply the necessary lateral pressure to the blank for the thickening of the same vertically, but which will prevent any lengthening of said blank during the operation; and

with these ends in view my improvement consists in forming on the edges of the dies the corrugations hereinafter described for securing an exceedingly firm grip upon the material worked between them.

In order that such as are skilled in the art to which my invention appertains may fully understand my improvement, I will describe the same in detail, referring by letter to the accompanying drawings, forming a part of this specification, and in which- Figure l is an elevation of a set of dies and blocks, the spoon-blank being shown in sec tion; Fig. 2, a similar view, but with the dies closed upon the blank; Fig. 3, a perspective of the dies in proper position relative to aspoonblank; Fig. 4, a perspective of a spoon-blank after the action of the dies; Fig. 5, a detail perspective of one of the dies provided with corrugations in place of the notches, and Fig. 6 a plan viewof a blank formed between smooth-surfaced dies and intended for comparison with Fig. 4.

Similar letters denote like parts in all the figures of the drawings.

A are the dies, whose operating edges are conformed to the shape of the central portion of a spoon-blank, as seen at Fig. 3. These dies may be operated by any convenient means whereby power may be applied to them.

B is a stationary block, upon which the dies rest. and C is a movable block arranged above the block B and the dies, as shown at Figs. 1 and 2. The blocks B C hold the spoon -blank flat during the action of the (lies, and the upper block is arranged to lie-raised slightly by the metal as the latter is compressed, as shown at Fig. 2. I V

D are notches or corrugations formed in or upon the operating 'faces of the dies, and at right angles to the length thereof.

E is the spoon-blank.

My improved dies are operated after the manner described in the Letters Patent No. 232,320, hereinbefore referred to, and their functionviz., to compress the blank transversely to its length, and thereby both harden and thicken the metal thereof-is similar to the function performed by the means embraced in said Letters Patent, but with the important difference now to be set forth. The notched. or corrugated operating-surfaces, when. forced against the blank, lay hold thereon, so that longitudinal stretching or spreading thereof is entirely obviated. As will be readily understood, this is caused by the upset of the metal of the blank into the'corrugations of the (lies. Since the metal cannot expand longitudinally, the compression results in an increase of thickness only, instead of an increase both in length and thickness.

The tendency of the metal blank to elongate under transverse pressure is very great, and varies, of course, with every slight variation in the thickness of the metal. The advantage of my. improvement will therefore be readily recognized, since as no lengthening can occur, the finished blanks, while they may vary slightly in thickness, do not vary perccptibly in length.

I do not wish to be understood as laying claim, broadly, in any sense to swaging-dies for operating upon spoon and fork blanks, nor do I desire to be understood as claiming as of my invention the arrangement of dies and above referred to, but only my particular conin their operating-surfaces aseries of notches struction of dies as appears fron'r this specifiextending across said surfaces and substancation and drawings. tially transverse to their length, as and for the I claim and desire to secure by Letters Patpurpose shown and described. 5 ent In testimony whereof I affix my signature I 5 1 1. A pair of dies of the character described, in presence of two witnesses. having their operating-surfaces corrugated or EDWVARD XV. SHANNON. roughened transversely to the length thereof, Witnesses: substantially as set fortln GEO. E. TERRY,

IO 2. Apair of diesas described, havingi'ornied G. A. HAMILTON.- 

